var winWidth = 0;
var winHeight = 0;

function findDimensions() //函数：获取尺寸
{
    
    //获取窗口宽度
    if (window.innerWidth)
        winWidth = window.innerWidth;
    else if ((document.body) && (document.body.clientWidth))
        winWidth = document.body.clientWidth;
    //获取窗口高度
    if (window.innerHeight)
        winHeight = window.innerHeight;
    else if ((document.body) && (document.body.clientHeight))
        winHeight = document.body.clientHeight;
    /*nasty hack to deal with doctype swith in IE*/
    //通过深入Document内部对body进行检测，获取窗口大小
    if (document.documentElement && document.documentElement.clientHeight && document.documentElement.clientWidth) {
        winHeight = document.documentElement.clientHeight;
        winWidth = document.documentElement.clientWidth;
    }
    //结果输出至两个文本框  

    $("#map").css("width", winWidth);
    $("#map").css("height", winHeight-30);
   
}

window.onresize = findDimensions;    
